/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:23:55,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:23:55,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:23:55,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:23:55,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:23:55,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:23:55,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:23:55,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:23:55,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:23:55,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:23:55,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:23:55,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:23:55,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:23:55,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:23:55,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:23:55,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:23:55,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:23:55,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:23:55,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:23:55,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:23:55,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:23:55,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:23:55,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:23:55,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:23:55,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:23:55,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:23:55,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:23:55,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:23:55,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:23:55,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:23:55,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:23:55,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:23:55,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:23:55,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:23:55,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:23:55,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:23:55,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:23:55,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:23:55,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:23:55,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:23:55,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:23:55,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:23:55,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:23:55,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:23:55,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:23:55,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:23:55,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:23:55,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:23:55,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:23:55,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:23:55,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:23:55,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:23:55,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:23:55,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:23:55,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:23:55,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:23:55,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:23:55,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:23:55,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:55,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:23:55,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:23:55,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:23:55,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:23:55,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:23:55,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:23:55,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:23:55,644 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:23:55,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:23:55,978 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:23:55,982 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:23:55,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:23:55,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:23:55,985 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-14 22:23:56,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16ba59c4/e24cc22a5f1a4112b50171acd12ff410/FLAG0affe6f1f [2020-10-14 22:23:56,693 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:23:56,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label07.c [2020-10-14 22:23:56,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16ba59c4/e24cc22a5f1a4112b50171acd12ff410/FLAG0affe6f1f [2020-10-14 22:23:56,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e16ba59c4/e24cc22a5f1a4112b50171acd12ff410 [2020-10-14 22:23:56,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:23:56,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:23:56,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:56,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:23:56,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:23:56,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:56" (1/1) ... [2020-10-14 22:23:56,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729acd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:56, skipping insertion in model container [2020-10-14 22:23:56,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:23:56" (1/1) ... [2020-10-14 22:23:56,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:23:57,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:23:58,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:58,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:23:58,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:23:58,677 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:23:58,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58 WrapperNode [2020-10-14 22:23:58,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:23:58,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:23:58,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:23:58,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:23:58,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,913 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... [2020-10-14 22:23:58,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:23:58,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:23:58,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:23:58,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:23:58,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:23:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:23:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:23:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:23:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:23:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:23:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:23:59,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:23:59,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:23:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:23:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:23:59,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:23:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:23:59,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:24:08,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:24:08,072 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:24:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:24:08 BoogieIcfgContainer [2020-10-14 22:24:08,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:24:08,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:24:08,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:24:08,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:24:08,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:23:56" (1/3) ... [2020-10-14 22:24:08,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5057d141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:24:08, skipping insertion in model container [2020-10-14 22:24:08,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:23:58" (2/3) ... [2020-10-14 22:24:08,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5057d141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:24:08, skipping insertion in model container [2020-10-14 22:24:08,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:24:08" (3/3) ... [2020-10-14 22:24:08,090 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label07.c [2020-10-14 22:24:08,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:24:08,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:24:08,126 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:24:08,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:24:08,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:24:08,162 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:24:08,162 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:24:08,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:24:08,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:24:08,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:24:08,163 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:24:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 22:24:08,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 22:24:08,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:08,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:08,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:08,215 INFO L82 PathProgramCache]: Analyzing trace with hash -959393263, now seen corresponding path program 1 times [2020-10-14 22:24:08,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:08,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208316388] [2020-10-14 22:24:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:08,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:08,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:08,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 22:24:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 22:24:08,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:08,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:24:08,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:08,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 22:24:08,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:24:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:09,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:09,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:09,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:09,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:24:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:09,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:09,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208316388] [2020-10-14 22:24:09,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:24:09,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:24:09,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137335700] [2020-10-14 22:24:09,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:24:09,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:09,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:24:09,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:24:09,084 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 22:24:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:17,262 INFO L93 Difference]: Finished difference Result 1693 states and 3093 transitions. [2020-10-14 22:24:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:24:17,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 22:24:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:17,291 INFO L225 Difference]: With dead ends: 1693 [2020-10-14 22:24:17,291 INFO L226 Difference]: Without dead ends: 1011 [2020-10-14 22:24:17,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:24:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2020-10-14 22:24:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 986. [2020-10-14 22:24:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-10-14 22:24:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1578 transitions. [2020-10-14 22:24:17,442 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1578 transitions. Word has length 33 [2020-10-14 22:24:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:17,443 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1578 transitions. [2020-10-14 22:24:17,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:24:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1578 transitions. [2020-10-14 22:24:17,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 22:24:17,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:17,448 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:17,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:24:17,449 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:17,449 INFO L82 PathProgramCache]: Analyzing trace with hash -445903901, now seen corresponding path program 1 times [2020-10-14 22:24:17,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:17,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081524034] [2020-10-14 22:24:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:24:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:24:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-14 22:24:18,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:18,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:24:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:24:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:24:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:19,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:24:19,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:19,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:19,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:19,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:24:19,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:19,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:19,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:24:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:24:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 22:24:19,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:19,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:19,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:24:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:24:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:24:19,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081524034] [2020-10-14 22:24:19,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:19,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:24:19,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549009549] [2020-10-14 22:24:19,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:24:19,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:19,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:24:19,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:24:19,845 INFO L87 Difference]: Start difference. First operand 986 states and 1578 transitions. Second operand 6 states. [2020-10-14 22:24:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:35,912 INFO L93 Difference]: Finished difference Result 2453 states and 4033 transitions. [2020-10-14 22:24:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 22:24:35,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-14 22:24:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:35,923 INFO L225 Difference]: With dead ends: 2453 [2020-10-14 22:24:35,923 INFO L226 Difference]: Without dead ends: 1473 [2020-10-14 22:24:35,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:24:35,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2020-10-14 22:24:35,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1450. [2020-10-14 22:24:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-10-14 22:24:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2038 transitions. [2020-10-14 22:24:35,982 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2038 transitions. Word has length 102 [2020-10-14 22:24:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:35,982 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 2038 transitions. [2020-10-14 22:24:35,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:24:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2038 transitions. [2020-10-14 22:24:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 22:24:35,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:35,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:35,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:24:35,988 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1950584953, now seen corresponding path program 1 times [2020-10-14 22:24:35,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:35,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861502854] [2020-10-14 22:24:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:36,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:36,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 22:24:36,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:36,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 22:24:36,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:36,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 22:24:36,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 22:24:36,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:36,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:36,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:36,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:36,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:36,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:36,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:24:36,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:36,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:36,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:24:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:36,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:24:36,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:36,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:36,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 22:24:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 22:24:36,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:36,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 22:24:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:36,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861502854] [2020-10-14 22:24:36,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:24:36,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:24:36,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174618855] [2020-10-14 22:24:36,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:24:36,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:24:36,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:24:36,497 INFO L87 Difference]: Start difference. First operand 1450 states and 2038 transitions. Second operand 5 states. [2020-10-14 22:24:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:24:48,040 INFO L93 Difference]: Finished difference Result 2475 states and 3860 transitions. [2020-10-14 22:24:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:24:48,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-10-14 22:24:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:24:48,052 INFO L225 Difference]: With dead ends: 2475 [2020-10-14 22:24:48,052 INFO L226 Difference]: Without dead ends: 1915 [2020-10-14 22:24:48,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:24:48,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2020-10-14 22:24:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1899. [2020-10-14 22:24:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1899 states. [2020-10-14 22:24:48,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 2620 transitions. [2020-10-14 22:24:48,116 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 2620 transitions. Word has length 107 [2020-10-14 22:24:48,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:24:48,117 INFO L479 AbstractCegarLoop]: Abstraction has 1899 states and 2620 transitions. [2020-10-14 22:24:48,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:24:48,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 2620 transitions. [2020-10-14 22:24:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 22:24:48,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:24:48,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:24:48,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:24:48,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:24:48,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:24:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1604003901, now seen corresponding path program 1 times [2020-10-14 22:24:48,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:24:48,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120042367] [2020-10-14 22:24:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:24:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:48,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:48,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 22:24:48,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:48,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 22:24:48,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:48,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:48,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:24:48,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:24:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:24:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:24:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:24:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:48,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:24:48,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 22:24:48,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:48,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:24:48,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:24:48,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:24:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:24:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:24:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:24:49,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:24:49,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:24:49,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:24:49,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 22:24:49,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:24:49,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:24:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:24:49,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:24:49,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:24:49,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:24:49,200 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:24:49,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120042367] [2020-10-14 22:24:49,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:24:49,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:24:49,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201084286] [2020-10-14 22:24:49,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:24:49,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:24:49,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:24:49,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:24:49,207 INFO L87 Difference]: Start difference. First operand 1899 states and 2620 transitions. Second operand 8 states. [2020-10-14 22:25:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:09,064 INFO L93 Difference]: Finished difference Result 5210 states and 7626 transitions. [2020-10-14 22:25:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 22:25:09,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-14 22:25:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:09,087 INFO L225 Difference]: With dead ends: 5210 [2020-10-14 22:25:09,087 INFO L226 Difference]: Without dead ends: 2852 [2020-10-14 22:25:09,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 22:25:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2020-10-14 22:25:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 2811. [2020-10-14 22:25:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2811 states. [2020-10-14 22:25:09,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3463 transitions. [2020-10-14 22:25:09,193 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3463 transitions. Word has length 109 [2020-10-14 22:25:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:09,193 INFO L479 AbstractCegarLoop]: Abstraction has 2811 states and 3463 transitions. [2020-10-14 22:25:09,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:25:09,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3463 transitions. [2020-10-14 22:25:09,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 22:25:09,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:09,197 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:25:09,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:25:09,197 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:09,198 INFO L82 PathProgramCache]: Analyzing trace with hash -55355403, now seen corresponding path program 1 times [2020-10-14 22:25:09,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:09,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955667351] [2020-10-14 22:25:09,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:09,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:10,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-14 22:25:10,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:25:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-10-14 22:25:10,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:10,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:25:10,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:10,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:10,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:10,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:10,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:25:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:10,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:25:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:10,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:25:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:10,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:10,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:10,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:10,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:10,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:10,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 22:25:10,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:10,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:10,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:10,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:25:10,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:10,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:10,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:10,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:25:10,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:10,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 22:25:10,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:10,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:10,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:25:10,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:11,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955667351] [2020-10-14 22:25:11,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:11,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:25:11,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44618919] [2020-10-14 22:25:11,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:25:11,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:25:11,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:25:11,028 INFO L87 Difference]: Start difference. First operand 2811 states and 3463 transitions. Second operand 8 states. [2020-10-14 22:25:22,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:25:22,326 INFO L93 Difference]: Finished difference Result 5200 states and 6520 transitions. [2020-10-14 22:25:22,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:25:22,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 193 [2020-10-14 22:25:22,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:25:22,342 INFO L225 Difference]: With dead ends: 5200 [2020-10-14 22:25:22,342 INFO L226 Difference]: Without dead ends: 2828 [2020-10-14 22:25:22,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:25:22,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2020-10-14 22:25:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2807. [2020-10-14 22:25:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2020-10-14 22:25:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3256 transitions. [2020-10-14 22:25:22,416 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3256 transitions. Word has length 193 [2020-10-14 22:25:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:25:22,416 INFO L479 AbstractCegarLoop]: Abstraction has 2807 states and 3256 transitions. [2020-10-14 22:25:22,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:25:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3256 transitions. [2020-10-14 22:25:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-14 22:25:22,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:25:22,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:25:22,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:25:22,420 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:25:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:25:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash 382918713, now seen corresponding path program 1 times [2020-10-14 22:25:22,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:25:22,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875503559] [2020-10-14 22:25:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:25:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 22:25:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:25:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3771 [2020-10-14 22:25:26,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:25:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:25:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 22:25:26,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:26,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:25:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:25:26,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:26,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:25:26,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:25:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:25:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:25:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:25:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:26,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:25:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:26,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 22:25:26,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:26,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:25:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:25:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:25:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:25:26,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:25:27,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:25:27,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:25:27,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:25:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-14 22:25:27,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:25:27,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:25:27,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:25:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:25:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:25:27,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:25:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 56 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:25:27,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875503559] [2020-10-14 22:25:27,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:25:27,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 22:25:27,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674557245] [2020-10-14 22:25:27,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:25:27,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:25:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:25:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:25:27,420 INFO L87 Difference]: Start difference. First operand 2807 states and 3256 transitions. Second operand 10 states. [2020-10-14 22:25:35,668 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-14 22:26:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:12,170 INFO L93 Difference]: Finished difference Result 8178 states and 9825 transitions. [2020-10-14 22:26:12,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 22:26:12,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 195 [2020-10-14 22:26:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:12,210 INFO L225 Difference]: With dead ends: 8178 [2020-10-14 22:26:12,211 INFO L226 Difference]: Without dead ends: 5810 [2020-10-14 22:26:12,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 22:26:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2020-10-14 22:26:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 5646. [2020-10-14 22:26:12,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5646 states. [2020-10-14 22:26:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 6580 transitions. [2020-10-14 22:26:12,404 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 6580 transitions. Word has length 195 [2020-10-14 22:26:12,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:12,405 INFO L479 AbstractCegarLoop]: Abstraction has 5646 states and 6580 transitions. [2020-10-14 22:26:12,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:26:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 6580 transitions. [2020-10-14 22:26:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 22:26:12,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:12,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:12,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:26:12,410 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash -376220690, now seen corresponding path program 1 times [2020-10-14 22:26:12,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:12,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669582877] [2020-10-14 22:26:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:17,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:17,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-14 22:26:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:26:17,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 22:26:17,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:17,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:26:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 22:26:17,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 22:26:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:26:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:17,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:17,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:17,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 22:26:17,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:17,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:17,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:26:17,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:17,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:17,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:18,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:18,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:26:18,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:26:18,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-14 22:26:18,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:18,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:18,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:18,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:26:18,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-14 22:26:18,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669582877] [2020-10-14 22:26:18,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:18,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:26:18,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320474258] [2020-10-14 22:26:18,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:26:18,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:26:18,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:26:18,257 INFO L87 Difference]: Start difference. First operand 5646 states and 6580 transitions. Second operand 5 states. [2020-10-14 22:26:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:26:34,670 INFO L93 Difference]: Finished difference Result 10870 states and 12730 transitions. [2020-10-14 22:26:34,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:26:34,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-14 22:26:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:26:34,712 INFO L225 Difference]: With dead ends: 10870 [2020-10-14 22:26:34,712 INFO L226 Difference]: Without dead ends: 5663 [2020-10-14 22:26:34,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:26:34,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2020-10-14 22:26:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 5646. [2020-10-14 22:26:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5646 states. [2020-10-14 22:26:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 6560 transitions. [2020-10-14 22:26:34,894 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 6560 transitions. Word has length 206 [2020-10-14 22:26:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:26:34,895 INFO L479 AbstractCegarLoop]: Abstraction has 5646 states and 6560 transitions. [2020-10-14 22:26:34,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:26:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 6560 transitions. [2020-10-14 22:26:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-14 22:26:34,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:26:34,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:26:34,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:26:34,904 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:26:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:26:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash 835441353, now seen corresponding path program 1 times [2020-10-14 22:26:34,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:26:34,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044384824] [2020-10-14 22:26:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:26:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:26:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:26:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 22:26:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 22:26:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:26:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-14 22:26:40,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:40,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:26:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:40,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:40,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:40,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:26:40,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:40,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:26:40,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:40,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:26:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:26:40,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:26:40,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:26:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:40,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:40,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:40,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:26:40,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:40,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 22:26:40,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:40,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:40,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:26:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:40,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:26:40,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:26:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:40,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:40,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:26:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:26:40,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:40,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:26:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:26:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:26:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:26:40,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-14 22:26:41,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:26:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:26:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:26:41,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:26:41,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:26:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:26:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:26:41,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:26:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:26:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:26:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:26:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:26:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 83 proven. 216 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 22:26:41,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044384824] [2020-10-14 22:26:41,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:26:41,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:26:41,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038376307] [2020-10-14 22:26:41,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:26:41,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:26:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:26:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:26:41,317 INFO L87 Difference]: Start difference. First operand 5646 states and 6560 transitions. Second operand 10 states. [2020-10-14 22:26:41,528 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-14 22:26:48,568 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 22:27:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:24,328 INFO L93 Difference]: Finished difference Result 15730 states and 19250 transitions. [2020-10-14 22:27:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 22:27:24,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 273 [2020-10-14 22:27:24,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:24,381 INFO L225 Difference]: With dead ends: 15730 [2020-10-14 22:27:24,381 INFO L226 Difference]: Without dead ends: 10523 [2020-10-14 22:27:24,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-14 22:27:24,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10523 states. [2020-10-14 22:27:24,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10523 to 9783. [2020-10-14 22:27:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9783 states. [2020-10-14 22:27:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9783 states to 9783 states and 11059 transitions. [2020-10-14 22:27:24,640 INFO L78 Accepts]: Start accepts. Automaton has 9783 states and 11059 transitions. Word has length 273 [2020-10-14 22:27:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:24,641 INFO L479 AbstractCegarLoop]: Abstraction has 9783 states and 11059 transitions. [2020-10-14 22:27:24,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:27:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9783 states and 11059 transitions. [2020-10-14 22:27:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-14 22:27:24,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:24,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:24,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:27:24,648 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1321315798, now seen corresponding path program 1 times [2020-10-14 22:27:24,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:24,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474018683] [2020-10-14 22:27:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:25,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 22:27:25,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:25,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-10-14 22:27:25,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:25,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-14 22:27:25,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:27:25,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:25,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:25,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:25,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:25,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:27:25,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:25,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:25,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:27:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:25,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:27:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:25,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:25,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:25,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:25,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:27:25,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:25,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:25,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:27:25,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:25,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:27:25,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:25,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:27:25,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:27:25,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:25,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:25,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:27:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:27:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:25,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:25,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:27:25,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:25,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 22:27:25,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:25,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:25,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:27:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-14 22:27:26,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474018683] [2020-10-14 22:27:26,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:27:26,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:27:26,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130974644] [2020-10-14 22:27:26,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:27:26,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:27:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:27:26,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:27:26,113 INFO L87 Difference]: Start difference. First operand 9783 states and 11059 transitions. Second operand 7 states. [2020-10-14 22:27:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:27:49,092 INFO L93 Difference]: Finished difference Result 23845 states and 27813 transitions. [2020-10-14 22:27:49,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:27:49,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-14 22:27:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:27:49,148 INFO L225 Difference]: With dead ends: 23845 [2020-10-14 22:27:49,148 INFO L226 Difference]: Without dead ends: 14943 [2020-10-14 22:27:49,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:27:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14943 states. [2020-10-14 22:27:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14943 to 13497. [2020-10-14 22:27:49,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13497 states. [2020-10-14 22:27:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13497 states to 13497 states and 15772 transitions. [2020-10-14 22:27:49,460 INFO L78 Accepts]: Start accepts. Automaton has 13497 states and 15772 transitions. Word has length 277 [2020-10-14 22:27:49,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:27:49,461 INFO L479 AbstractCegarLoop]: Abstraction has 13497 states and 15772 transitions. [2020-10-14 22:27:49,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:27:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13497 states and 15772 transitions. [2020-10-14 22:27:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 22:27:49,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:27:49,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:27:49,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:27:49,468 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:27:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:27:49,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1960721970, now seen corresponding path program 1 times [2020-10-14 22:27:49,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:27:49,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916711640] [2020-10-14 22:27:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:27:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:49,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:50,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:53,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-14 22:27:53,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:27:53,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4294 [2020-10-14 22:27:53,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:53,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:27:53,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:27:53,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-14 22:27:53,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:27:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:27:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:53,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:53,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:27:53,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:27:53,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:53,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:27:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:27:53,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:27:53,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:27:54,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:27:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 22:27:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 22:27:54,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:27:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:27:54,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 22:27:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:27:54,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:27:54,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:27:54,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:27:54,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 22:27:54,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:27:54,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:27:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:27:54,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:27:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 22:27:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:27:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-14 22:27:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:27:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking...